[Spice-devel] [PATCH spice-gtk v3] gst: check pulsesrc version >= 1.14.5

[Marc-André Lureau]

Hi

On Sun, Jan 13, 2019 at 1:13 PM Snir Sheriber <ssheribe at redhat.com> wrote:
>
>
> On 1/11/19 1:03 PM, marcandre.lureau at redhat.com wrote:
> > From: Marc-André Lureau <marcandre.lureau at redhat.com>
> >
> > There is a racy bug in pulsesrc that we can't easily workaround:
> > https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/merge_requests/69
> >
> > It is fixed with 1.15, and will be backported to upcoming 1.14.5.
> >
> > PulseAudio may not be picked by autoaudiosrc, but looking up the
> > actual source or mimicking GstAutoDetect is unnecessarily complicated.
> >
> > When pulsesrc < 1.14.5 is detected, let's drop its rank, so it won't be picked.
> >
> > Signed-off-by: Marc-André Lureau <marcandre.lureau at redhat.com>
> > ---
> >   src/spice-gstaudio.c | 28 ++++++++++++++++++++++++++++
> >   1 file changed, 28 insertions(+)
> >
> > diff --git a/src/spice-gstaudio.c b/src/spice-gstaudio.c
> > index d0cfbc6..49e9ae6 100644
> > --- a/src/spice-gstaudio.c
> > +++ b/src/spice-gstaudio.c
> > @@ -527,7 +527,35 @@ SpiceGstaudio *spice_gstaudio_new(SpiceSession *session, GMainContext *context,
> >                                     const char *name)
> >   {
> >       GError *err = NULL;
> > +
> >       if (gst_init_check(NULL, NULL, &err)) {
> > +        GstPluginFeature *pulsesrc;
> > +
> > +        pulsesrc = gst_registry_lookup_feature(gst_registry_get(), "pulsesrc");
> > +        if (pulsesrc) {
> > +            unsigned major, minor, micro;
> > +            GstPlugin *plugin = gst_plugin_feature_get_plugin(pulsesrc);
> > +
> > +            if (sscanf(gst_plugin_get_version(plugin), "%u.%u.%u",
> > +                       &major, &minor, &micro) != 3) {
> > +                g_warn_if_reached();
> > +                gst_object_unref(plugin);
> > +                gst_object_unref(pulsesrc);
> > +                return NULL;
>
> In that case plugin exists but version is unclear, isn't it preferable
> to just setting a low rank as well?

I don't think we should touch it in that case, as we don't know about it.

>
> Looks good to me other than that

ack, then?

thanks

>
>
> Snir.
>
> > +            }
> > +
> > +            if (major < 1 ||
> > +                (major == 1 && minor < 14) ||
> > +                (major == 1 && minor == 14 && micro < 5)) {
> > +                g_warning("Bad pulsesrc version %s, lowering its rank",
> > +                          gst_plugin_get_version(plugin));
> > +                gst_plugin_feature_set_rank(pulsesrc, GST_RANK_NONE);
> > +            }
> > +
> > +            gst_object_unref(plugin);
> > +            gst_object_unref(pulsesrc);
> > +        }
> > +
> >           return g_object_new(SPICE_TYPE_GSTAUDIO,
> >                               "session", session,
> >                               "main-context", context,
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-- 
Marc-André Lureau